Winehouse is "ready for the Brits," he says, referring to Amy's scheduled performance Wednesday at the U.K.'s equivalent of the Grammys.

"I think sometimes it takes you to go through certain hard things to overcome and to go on to do better things," Thompson, 26, says. "She looked really good at the Grammys. She just looked very rested. It was great."

But success that night hasn't turned Amy Winehouse - seen here falling into the arms of backup singer Zalon Thompson after winning Grammy #5 - into a diva.

"I was speaking with [mutual friend] Kelly Osbourne the other day. And we were saying how she hasn't changed at all," said Thompson.

"She doesn't believe in the same principles that everyone else gets excited about. Get her a guitar and she'll play for 10 people or 300. She doesn't care about the whole fame thing - it's really about the music."

Zalon Thompson also set the record straight about Blake Wood, a pal of Kelly Osbourne's Amy Winehouse has been hanging out with.

"Blake Wood is a friend," Thompson says. "When she first introduced him to us, she was like, 'This is Blake.' And everyone in the room started laughing. I was like, 'Why are you telling me this guy is Blake? I know who Blake is.'"

And there is little confusion or doubt about Amy Winehouse's feelings for her incarcerated, drug-addict husband, Blake Fielder-Civil.

As Thompson says, just look at her face: "That teardrop she's wearing in makeup on her face â€" I asked her. It's because her baby's incarcerated."

Thompson described the atmosphere inside London's Riverside Studios during Amy Winehouse's Grammy performance as "like a birthday party. Like Amy's birthday party, and she was winning the Grammys. It was so surreal."

"It was like four in the morning - we were drinking our Red Bulls and she's winning another Grammy," says Thompson, whose younger brother Heshima Thompson, 21, also performs with the acclaimed Back to Black singer.

"At one point, I'm like, 'Omigod Amy, you won three awards already. And she was like, 'Zalon, we won it.' It was really nice that she's still humble. She was just so chilled about the whole thing. She's like 'It's cool, innit?'"